/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r-ctl);font-weight:600;font-size:15px;letter-spacing:.01em;border:1px solid transparent;cursor:pointer;text-decoration:none!important;white-space:nowrap;transition:background .18s,border-color .18s,color .18s,box-shadow .18s,transform .12s}
.btn:active{transform:translateY(1px)}
.btn-solid{background:var(--cyan);color:var(--cyan-ink)!important;font-weight:700;box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 1px 2px rgba(0,0,0,.45)}
.btn-solid:hover{background:#4ee0ff;box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 6px 18px rgba(32,213,249,.28)}
.btn-line{border-color:#39434f;color:var(--ink-max)!important;background:rgba(255,255,255,.03)}
.btn-line:hover{border-color:var(--cyan);color:var(--cyan)!important;background:var(--cyan-soft)}
.btn-sm{min-height:36px;padding:0 14px;font-size:14px}
.btn-block{width:100%}

/* ---------- 等级点与标签 ---------- */
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--lv4);vertical-align:middle}
.dot.lv1{background:var(--lv1)}
.dot.lv2{background:var(--lv2)}
.dot.lv3{background:var(--lv3)}
.dot.cyan{background:var(--cyan)}
@keyframes breath{0%,100%{opacity:1}50%{opacity:.4}}
.lv{display:inline-block;font-size:12px;line-height:1.6;padding:1px 8px;border-radius:4px;font-weight:600;letter-spacing:.02em}
.lv.lv1{color:var(--lv1);background:rgba(255,77,95,.12)}
.lv.lv2{color:var(--lv2);background:rgba(255,143,61,.12)}
.lv.lv3{color:var(--lv3);background:rgba(255,212,71,.12)}
.lv.lv4{color:var(--lv4);background:rgba(70,230,164,.12)}
.lv.ok{color:var(--lv4);background:rgba(70,230,164,.12)}
.lv.cyan{color:var(--cyan);background:var(--cyan-soft)}

/* ---------- 顶栏 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(11,13,16,.96);border-bottom:1px solid var(--line)}
.nav .tel{color:var(--ink-2);font-family:var(--num);font-size:14px;padding:8px 10px}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-max);font-weight:700;font-size:17px;text-decoration:none!important}
.brand img{width:30px;height:30px;border-radius:7px}
.nav ul{display:flex;align-items:center;gap:2px;list-style:none}
.nav ul a:not(.btn){display:block;color:var(--ink-2);padding:8px 13px;border-radius:var(--r-ctl);font-size:15px;text-decoration:none!important}
.nav ul a:not(.btn):hover,.nav ul a:not(.btn)[aria-current="page"]{color:var(--ink-max);background:rgba(255,255,255,.06)}
.nav ul .btn{margin-left:10px;min-height:38px;padding:0 16px;font-size:14.5px}
/* 顶栏入口按钮：不用实心青，淡青底 + 青边 + 白字 + 一个在线状态点，顶栏安静些 */
.nav ul .btn-solid{background:var(--cyan-soft);border-color:rgba(32,213,249,.45);color:var(--ink-max)!important;font-weight:600;box-shadow:none}
.nav ul .btn-solid::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none;animation:breath 2.4s infinite}
.nav ul .btn-solid:hover{background:rgba(32,213,249,.2);border-color:var(--cyan);box-shadow:none}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line-strong);background:none;color:var(--ink-max);border-radius:var(--r-ctl);font-size:20px;cursor:pointer}

/* ---------- 屏幕模拟外框 ---------- */
.screen{background:var(--panel);border:1px solid var(--line-strong);border-radius:var(--r-screen);overflow:hidden;font-size:12px}
.screen-bar{display:flex;align-items:center;gap:10px;height:36px;padding:0 14px;border-bottom:1px solid var(--line);color:var(--ink-3);font-size:12px}
.screen-bar b{color:var(--ink);font-weight:600}
.screen-bar .grow{flex:1}
.screen-bar .lights{display:inline-block;width:8px;height:8px;border-radius:50%;background:#ff5f57;box-shadow:13px 0 0 #febc2e,26px 0 0 #28c840;margin-right:26px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}
.stat-row>div{padding:10px 14px;border-right:1px solid var(--line)}
.stat-row>div:last-child{border-right:none}
.stat-row small{display:block;color:var(--ink-3);font-size:11px}
.stat-row b{font-family:var(--num);font-size:22px;font-weight:700;color:var(--ink-max);line-height:1.3}
.stat-row b.c{color:var(--cyan)}
.stat-row b.r{color:var(--lv1)}
.feed-head,.frow{display:grid;grid-template-columns:8px 1.1fr 1.3fr 64px;gap:10px;align-items:center;padding:7px 10px}
.feed-head{color:var(--ink-3);font-size:11px;border-bottom:1px solid var(--line)}
.frow{border-bottom:1px solid var(--line);animation:frow-in .45s ease both}
.frow i{width:8px;height:8px;border-radius:50%;background:var(--lv4)}
.frow.lv1 i{background:var(--lv1)}
.frow.lv2 i{background:var(--lv2)}
.frow.lv3 i{background:var(--lv3)}
.frow .t{color:var(--ink-max);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.frow .s{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.frow .d{font-family:var(--num);text-align:right;color:var(--ink)}
.frow.lv1{background:rgba(255,77,95,.07)}
@keyframes frow-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.term{background:#07090c;border:1px solid var(--line-strong);border-radius:var(--r-panel);font-family:var(--num);font-size:13px;overflow:hidden}
.term pre{padding:16px 18px;white-space:pre-wrap;line-height:1.8;color:var(--ink-2)}
.term .c{color:var(--cyan)}.term .g{color:var(--lv4)}.term .y{color:var(--lv3)}.term .w{color:var(--ink-max)}

/* ---------- 摄像头方格 ---------- */
.tile{position:relative;background:#000;border:1px solid var(--line);border-radius:6px;overflow:hidden;aspect-ratio:16/9}
.tile svg{width:100%;height:100%}
.tile .cap{position:absolute;left:6px;bottom:5px;font-family:var(--num);font-size:10px;color:#dfe;text-shadow:0 1px 2px #000;display:flex;gap:6px;align-items:center}
.tile .cap i{width:5px;height:5px;border-radius:50%;background:var(--lv1);animation:breath 1s infinite}
.tile .scan{position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 3px);pointer-events:none}
.tile.alert{border-color:var(--lv1);box-shadow:0 0 0 1px var(--lv1)}
.tile .flag{position:absolute;top:5px;right:6px;background:var(--lv1);color:#fff;font-size:10px;padding:1px 6px;border-radius:3px;font-weight:700}

/* ---------- 下载卡 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl{border:1px solid var(--line);border-radius:var(--r-panel);background:var(--panel);padding:24px;display:flex;flex-direction:column;gap:14px}
.dl-top{display:flex;gap:14px;align-items:center}
.dl-top .ic{width:46px;height:46px;border-radius:var(--r-ctl);background:var(--cyan-soft);border:1px solid rgba(32,213,249,.35);display:grid;place-items:center;flex-shrink:0}
.dl-top .ic svg{width:24px;height:24px;stroke:var(--cyan);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.dl-top h3{font-size:var(--t-18)}
.dl-top small{display:block;color:var(--ink-2);font-size:13px}
.dl-meta{display:grid;grid-template-columns:1fr 1fr 1fr;border:1px solid var(--line);border-radius:var(--r-ctl);background:rgba(0,0,0,.3)}
.dl-meta div{padding:8px 12px;border-right:1px solid var(--line);font-size:12px;color:var(--ink-3)}
.dl-meta div:last-child{border-right:none}
.dl-meta b{display:block;color:var(--ink-max);font-family:var(--num);font-size:13px;font-weight:600}
.dl p{font-size:14px;color:var(--ink);flex:1}
.dl .tip{font-size:13px;color:var(--ink-2);border-left:2px solid var(--lv3);padding:4px 10px}
.dl-foot{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2)}

/* ---------- 表单 ---------- */
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.field input{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line-strong);color:var(--ink-max);padding:12px 14px;border-radius:var(--r-ctl);font-size:15px;outline:none}
.field input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px var(--cyan-soft)}
.form-msg{min-height:24px;font-size:14px;color:var(--lv4);margin-top:10px}

/* ---------- 预约横幅 + 页脚 ---------- */
.band{padding:0!important;border-top:none!important}
.band .inner{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.band h2{font-size:clamp(24px,3vw,36px);margin-bottom:10px}
.band p{color:var(--ink-2)}
.band .acts{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}
footer{padding:56px 0 32px;color:var(--ink-2);font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid var(--line)}
.foot-grid h4{color:var(--ink-max);margin-bottom:12px;font-size:15px}
.foot-grid ul{list-style:none;display:grid;gap:8px}
.foot-grid a{color:var(--ink-2)}
.foot-grid a:hover{color:var(--cyan)}
.foot-grid .brand{margin-bottom:12px}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:20px;font-size:13px;color:var(--ink-3)}
.foot-bottom a{color:var(--ink-3)}

@media (max-width:1024px){.dl-grid{grid-template-columns:repeat(2,1fr)}.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){
  .nav ul{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;background:rgba(5,6,7,.97);border-bottom:1px solid var(--line);padding:10px 16px 16px}
  .nav ul.open{display:flex}
  .nav ul a:not(.btn){padding:12px}
  .nav ul .btn{margin:8px 0 0}
  .burger{display:block}
  .dl-grid{grid-template-columns:1fr}
  .band .inner{grid-template-columns:1fr;padding:48px 0}
  .band .acts{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr}
}

/* ---------- 背景特效容器 ---------- */
[data-bg]{position:relative;overflow:hidden}
[data-bg]>.bg{position:absolute;inset:0;z-index:0;pointer-events:none}
[data-bg]>.bg canvas{width:100%!important;height:100%!important}
[data-bg]>.wrap,[data-bg]>.inner{position:relative;z-index:1}
[data-bg]>.bg::after{content:"";position:absolute;inset:0;pointer-events:none}
.bg-net{opacity:.55}.bg-net::after{background:linear-gradient(90deg,rgba(11,13,16,.85),rgba(11,13,16,.2) 60%,rgba(11,13,16,.6)),linear-gradient(0deg,var(--bg),transparent 40%)}
.bg-dots{opacity:.9}.bg-dots::after{background:linear-gradient(90deg,rgba(11,13,16,.85),rgba(11,13,16,.25) 55%,rgba(11,13,16,.5)),linear-gradient(0deg,var(--bg),transparent 40%)}
.bg-globe{opacity:.6}.bg-globe::after{background:linear-gradient(90deg,rgba(11,13,16,.9),rgba(11,13,16,.35) 55%,rgba(11,13,16,.5)),linear-gradient(0deg,var(--bg),transparent 40%)}
.bg-fog{opacity:.9}.bg-fog::after{background:linear-gradient(90deg,rgba(11,13,16,.55),transparent 50%,rgba(11,13,16,.45))}
.bg-particles{opacity:.7}.bg-particles::after{background:radial-gradient(70% 70% at 50% 50%,transparent 30%,var(--bg) 100%)}
.bg-particles{pointer-events:auto}
.bg-stars{opacity:.9}.bg-stars::after{display:none}
.bg-hero{opacity:1;pointer-events:auto}.bg-hero::after{display:none}
.bg-hero canvas{position:absolute!important;inset:0}
.page-head[data-bg]{padding-bottom:64px!important}
.band[data-bg]{overflow:visible}
.band[data-bg] .inner{position:relative;z-index:1}